Automatic Rinse System for Agricultural Sprayer Plumbing
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Solution Overview
Problem
Agricultural sprayers require manual sequencing and timing of valves for rinsing, which can lead to misalignment, inadequate cleaning, exposure to harmful chemicals, and increased operator complexity.
Innovation Solution
A self-propelled sprayer with a flow monitoring and control system that allows automatic rinsing by electronically controlling valves and monitoring liquid flow in real-time, enabling operators to initiate a 'one touch' rinse command for thorough cleaning without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual sequencing and timing of valves is used for rinsing, then the operator can control the rinse process, but the risk of misalignment, inadequate cleaning, and exposure to harmful chemicals increases
Solution Approach 1:
The system uses automated valve control with sensors and controllers that self-regulate the rinse sequence timing and coordination, eliminating the need for manual operator intervention in sequencing operations
Solution Approach 2:
Manual mechanical valve operation is replaced with electronic/pneumatic automated valve actuation controlled by a central controller, which coordinates opening and closing sequences based on sensor feedback and pre-programmed timing
2Device complexity
If manual valve sequencing is used for rinsing, then the system structure remains simple, but the operator workload and complexity of the procedure increase
Solution Approach 1:
The automated system performs self-monitoring and self-control of the rinse process through sensors that detect valve positions and flow conditions, automatically adjusting sequences without operator intervention
Solution Approach 2:
Sensors provide real-time feedback on valve positions, liquid flow status, and system conditions to the controller, which automatically adjusts the rinse sequence timing and valve actuation based on this feedback
3Reliability
If thorough rinsing is performed with multiple valve sequences, then cleaning effectiveness improves, but the time required for the rinse process increases
Solution Approach 1:
The rinse process uses periodic cycling of valves through predetermined open/close sequences, repeating the cycle multiple times with optimized timing to achieve thorough cleaning while minimizing total duration
Solution Approach 2:
The system pre-coordinates valve sequencing and timing sequences before execution, optimizing the order and duration of each valve actuation to achieve maximum cleaning efficiency in minimum time
Data Source
AI summary
A rinse monitoring and control system for a self-propelled sprayer is configured to allow automatic rinsing of plumbing components and tubing of the sprayer with a liquid rinse by automatically controlling the timing and sequencing of electronic valves upon receiving a rinse command. Aspects of the rinsing can be configured by an operator, such as the whether the product tank is rinsed, the duration of each rinse, and the number of rinse cycles. The valves and liquid flow can be monitored in real time from a touchscreen HMI during the rinsing. Accordingly, the sprayer can be thoroughly rinsed by pressing a single button to generate the rinse command, without requiring the operator to manually actuate valves and/or recall stages of the rinse sequence.